Theoretical and experimental investigations of Coulomb blockade in coupled quantum dot systems

TL;DR

This paper combines theoretical and experimental approaches to study Coulomb blockade phenomena in strongly coupled quantum dot systems, revealing additional conductance features at low temperatures and confirming theoretical predictions with experimental data.

Contribution

It presents a comprehensive analysis of Coulomb blockade in coupled quantum dots, integrating experimental measurements with theoretical modeling to identify new conductance features.

Findings

Detection of additional conductance features beyond Coulomb blockade

Good agreement between experimental results and theoretical predictions

Insights into charge transport in strongly coupled quantum dots

Abstract

Two strongly coupled quantum dots are theoretically and experimentally investigated. In the conductance measurements of a GaAs based low-dimensional system additional features to the Coulomb blockade have been detected at low temperatures. These regions of finite conductivity are compared with theoretical investigations of a strongly coupled quantum dot system and good agreement of the theoretical and the experimental results has been found.